TY - JOUR
T1 - Modified self-Kerr-nonlinearity in a four-level N-type atomic system
AU - Sheng, Jiteng
AU - Yang, Xihua
AU - Wu, Haibin
AU - Xiao, Min
PY - 2011/11/10
Y1 - 2011/11/10
N2 - The self-Kerr-nonlinearity of a four-level N-type atomic system is studied both experimentally and theoretically. The self-Kerr-nonlinear coefficient n2 of the probe beam is greatly enhanced near atomic resonance, and can be dramatically modified by changing the switching laser power. With an increasing switching laser power, the slope of the Kerr nonlinear coefficient n2 around the atomic resonance changes from negative to positive, and the value of n2 varies from ∼-4 × 10-6 to 4 × 10-6 cm2/W at certain near-resonant probe frequency detunings. Such controllable Kerr nonlinearity can find applications in optoelectronic devices, such as all-optical switching and logic gates.
AB - The self-Kerr-nonlinearity of a four-level N-type atomic system is studied both experimentally and theoretically. The self-Kerr-nonlinear coefficient n2 of the probe beam is greatly enhanced near atomic resonance, and can be dramatically modified by changing the switching laser power. With an increasing switching laser power, the slope of the Kerr nonlinear coefficient n2 around the atomic resonance changes from negative to positive, and the value of n2 varies from ∼-4 × 10-6 to 4 × 10-6 cm2/W at certain near-resonant probe frequency detunings. Such controllable Kerr nonlinearity can find applications in optoelectronic devices, such as all-optical switching and logic gates.
UR - https://www.scopus.com/pages/publications/81055149727
U2 - 10.1103/PhysRevA.84.053820
DO - 10.1103/PhysRevA.84.053820
M3 - 文章
AN - SCOPUS:81055149727
SN - 1050-2947
VL - 84
JO - Physical Review A - Atomic, Molecular, and Optical Physics
JF - Physical Review A - Atomic, Molecular, and Optical Physics
IS - 5
M1 - 053820
ER -